His left hand moved feebly at his side.他的左手在身侧无力地动了一下。I said "Sorry", very feebly, feeling rather embarrassed.我小声说了一句“对不起”，觉得很不好意思。The bird is beating feebly.那只鸟的翅膀在无力地扑扇着....
核质被核膜包裹.The nucleoplasm is surrounded by the nuclear envelope.第1时相, 卵原细胞细胞质较少,核质比较大.In the first phase, the oogonium has little cytoplasm and bigger nuclear - cytoplasmic ratio.在紧缩期间,核质中的物质可以分为异染色质和常染色质.At this phase con...
陀螺仪用于船舶 、 飞机和宇宙飞船中的导航设备.Gyroscopes are used in navigational instruments for ships, aircraft, and spacecraft.借环形激光陀螺仪的技术,加以改进使之适用于流体流量的测量.Techniques borrowed from the ring laser gyro can be adapted to fluid flow measureme...